High-frequency and high-speed printed circuit boards (PCBs) are made of ceramic particles anisotropic fibres, which difficult to machine. In most cases, severe tool wear occurs when drilling high-frequency PCBs. To protect the substrate drills, diamond films typically fabricated on drills using hot filament chemical vapour deposition (HFCVD). This study investigates coating characteristics with...

The thermal aware floor planning for VLSIs and placement optimization of electronic components on printed circuit boards (PCBs) using genetic algorithms (GAs) are well studied. However, there no technical paper component considering the heat smartglasses. In this paper, we propose a method optimizing equipped smartglasses elitist non-dominated sorting algorithm (NSGA-II) resistance circuit. Ele...

Printed circuit boards (PCBs) from antiquated electronic goods were processed by a pyrometallurgical route to produce and separate alloy slag phases. The process involved initial size reduction of PCBs, followed pyrolysis at 500 °C for 6 h finally smelting the solid materials in an electric furnace. A preliminary test was performed 1600 estimate composition generated. In later kilogram-scale ex...

In recent years, Printed Circuit Boards (PCB) have become the backbone of a large number of consumer electronic devices leading to a surge in their production. This has made it imperative to employ automatic inspection systems to identify manufacturing defects in PCB before they are installed in the respective systems. An important task in this regard is the classification of defects as either ...

In this paper, a new de-embedding technique with Look-Up Table (LUT) is proposed for accurate and efficient characterization of interconnects, particularly printed circuit board (PCB) transmission lines including microstrip and stripline. LUT is pre-created to cover various fixture effects including the reference structures inside and/or outside test printed circuit boards (PCBs). The pre-estab...

In the production line of printed circuit boards (PCB), quality control requires constant counting and recording of the number of boards which, in some special cases, is done by workers in the factory. This form of counting consumes labor and time, not to mention the high error rate. In this paper, an automatic method to count PCBs is proposed. With the use of image processing techniques, the n...

It is estimated that electronic and electrical equipment discarded in 2021 weigh more than 57 million tonnes, less one-fifth of this waste (e-waste) recycled. The Printed Circuit Boards (PCBs) are the integral component any equipment, a useful type due to their nearly 30% metal content. This research aims explore hydrometallurgy technique recover precious metals from e-waste, transform material...

We have developed technologies to embedded high-speed polymer optical interconnects on printed circuit boards for 850 nm applications. In this paper, we show results of fabricating optical-PCBs on a production scale panels in a modern HDI-PCB (high-density interconnect-PCB) process environment. Impacts on board design and manufacturing were studied with the developed optical technology verifier...

Printed board assemblies, i.e. components soldered on printed circuit boards (PCBs), are exposed to thermal cycles responsible for fatigue cracking of solder joints as a result expansion mismatch between the constituting elements. Advanced finite element simulations performed using traction–separation law represent process and temperature-dependent elasto-viscoplastic model joint response. Pred...

Printed Circuit Board (PCB) is an essential component of almost all electrical and electron ic equipments. The rapid growth of the use of such equipments has contributed enormously to the generation of large quantity of waste PCBs. The WPCBs not only contain valuable metals but also a large variety of hazardous materials. Conventional treatments of such WPCBs have their own limitations. By pyro...